CN209822964U - Connector for photovoltaic - Google Patents
Connector for photovoltaic Download PDFInfo
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- CN209822964U CN209822964U CN201920915823.5U CN201920915823U CN209822964U CN 209822964 U CN209822964 U CN 209822964U CN 201920915823 U CN201920915823 U CN 201920915823U CN 209822964 U CN209822964 U CN 209822964U
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- teeth
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- 239000004020 conductor Substances 0.000 claims abstract description 86
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a photovoltaic connector, which comprises a conductive part and an insulating part, wherein the conductive part is wrapped in the insulating part; the conductive part is formed by riveting a conductor and a cable, and the peripheral surface of the conductor is provided with a plurality of backstop teeth; the insulating part comprises a shell main body, a screw cap, a basket-shaped fastener and a front sleeve, and a step surface is arranged in the inner cavity of the shell main body; the head of the front sleeve is annular and is sleeved outside the electric conductor; the inner diameter of the head of the front sleeve is larger than the outer diameter of the electric conductor and smaller than the outer diameter of a ring formed by the stopping teeth of the electric conductor, and the outer diameter of the head of the front sleeve is larger than the inner diameter of the front part of the inner cavity of the shell main body, so that the head of the front sleeve is abutted to the step surface of the shell main body. The utility model discloses increased and born the electric conductor and stopped moving back the preceding sleeve that the tooth brought stress forward extrusion process, risk such as the fracture that appears in the shell main part originally shifts, increased holistic life.
Description
Technical Field
The utility model belongs to the technical field of the electricity is connected, especially, relate to a connector for photovoltaic.
Background
The connector is a very important accessory in photovoltaic power generation, and is used for realizing electric connection between solar panels. Because the solar power station has long service life and severe service environment, the requirements on the stability and the reliability of the connector are high. The connector that is the mainstream in the prior art is the connector (as shown in fig. 1), which can be divided into a conductive part and an insulating part by taking a male head or a female head as an example, and the conductive part is wrapped in the insulating part; the conductive part is formed by riveting the conductor 2 and the cable 1, the insulating part is more complex, and comprises a shell main body 7 and a nut 3 which are connected by screw threads, and also comprises a basket-shaped fastener, wherein the fastener comprises a fastening sleeve 4 and an inner lining pipe 5, and the inner diameter of the fastener is reduced when the nut is screwed down, so that the cable is clamped and does not displace; the main body of the conductor 2 is cylindrical, a plurality of backstop teeth 21 extending backwards and outwards are arranged on the peripheral surface of the main body, the insulating part further comprises an annular backstop ring 8, one end of the backstop ring 8 is abutted against the backstop teeth 21, and the other end of the backstop ring is abutted against the basket-shaped fastener. When the components are sequentially installed and the screw cap is screwed down, the electric conductor is pressed by the fastening piece and cannot rotate or loosen in the circumferential direction; the axial direction can not be retreated under the pressure of the backstop ring; the retaining teeth enlarge the outer diameter of the conductor, and therefore, the conductor cannot advance in the axial direction even if being restricted by the housing main body. Thereby, a stable connector structure is constructed.
In use, the structural design of the connector shows that after the basket-shaped fastener hoops the cable, the nut is screwed continuously to push the fastener, the retaining ring, the cable and the conductor to move forwards continuously until the retaining tooth tops of the conductor contact the shell main body, and all the parts are in a locking state in all directions. This condition will be maintained throughout the life of the connector, possibly for 10-20 years. After the retaining teeth of the conductor contact the housing body, the housing body is stressed for such a long time that the housing body is subjected to the stress, and this part is often the weakest part of the housing, with the risk of the housing cracking. Particularly in desert areas, when the accidents happen, risks such as water leakage, short circuit, electric leakage and electric shock can be caused.
Disclosure of Invention
The utility model aims at providing a more reliable connector for photovoltaic.
Therefore, the utility model discloses a technical scheme is like this: a connector for photovoltaic use includes a conductive portion and an insulating portion, the conductive portion being wrapped in the insulating portion; the conductive part is formed by riveting a conductive body and a cable, the insulating part comprises a shell main body and a screw cap which are connected by threads, the diameter of the front part of the inner cavity of the shell main body is smaller than that of the rear part of the inner cavity of the shell main body, and a step surface is formed; the insulating part also comprises a basket-shaped fastener which is sleeved outside the cable wire and used for tightly hooping the cable wire; the main body of the electric conductor is cylindrical, the peripheral surface of the main body of the electric conductor is provided with a plurality of backstop teeth extending backwards and outwards, wherein a part of the electric conductor in front of the backstop teeth extends into the front part of the inner cavity of the main body of the shell;
the method is characterized in that:
the insulating part also comprises a front sleeve, the head of the front sleeve is annular and is sleeved outside the electric conductor; the inner diameter of the head of the front sleeve is larger than the outer diameter of the conductor and smaller than the outer diameter of a ring formed by the backstop teeth of the conductor, and the outer diameter of the head of the front sleeve is larger than the inner diameter of the front part of the inner cavity of the shell body, so that the head of the front sleeve is abutted against the step surface.
Furthermore, the inner diameter of the front sleeve main body is larger than that of the front sleeve head, and the two inner walls are in transitional connection through inclined planes.
The technical scheme can also be adopted: the front sleeve main body is provided with a plurality of inward extending check teeth, and the inner diameter of a ring formed by the check teeth is larger than the outer diameter of the conductor and smaller than the outer diameter formed by the check teeth of the conductor, so that the check teeth are abutted against the check teeth.
The utility model relates to a front sleeve, wherein in the most basic technical scheme, the front sleeve only limits an annular head, and the inner diameter and the outer diameter of the head and the main body are the same, so that the head and the main body can not be clearly distinguished in practice; the front sleeve plays a role in bearing the stress caused by stopping tooth withdrawal in the forward extrusion process of the conductor, even if the risk of cracking and the like exists, the front sleeve is not on the shell main body, and the front sleeve is integrally arranged in the shell main body, so that the requirement on the insulating and other physical properties of the front sleeve is lower than that of the shell main body, a manufacturer is possible to select a material with certain elasticity, and the stress caused by the conductor can be counteracted. Therefore, the technical problem of the utility model can be solved even by the most basic technical proposal. In this case, it is also necessary to apply a design such as a retaining ring in the prior art to prevent the backward movement of the conductor.
In a further technical scheme, the front sleeve is provided with a head part and a main body with different inner diameters, and is connected in a bevel transition way; because the stopping teeth on the conductor are necessarily inclined planes, the two inclined planes can be better matched, so that the stress area is increased, the fractional pressure is increased, and the cracking problem is better prevented.
In another technical scheme, the front sleeve is also provided with a reverse stopping tooth which is pressed against the stopping tooth, so that the function of the original stopping ring is integrated on the front sleeve, and one part can realize two functions.
Drawings
The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention
FIG. 1 is a prior art diagram;
FIG. 2 is an exploded view of the parts of the first embodiment;
FIG. 3 is a sectional view of the first embodiment;
FIG. 4 is a schematic structural view of a front sleeve according to an embodiment;
FIG. 5 is a sectional view of an assembly of a front sleeve and an electrical conductor according to an embodiment;
FIG. 6 is a schematic structural view of a second front sleeve according to an embodiment;
FIG. 7 is a sectional view of the assembly of the second front bushing and the conductor according to the embodiment;
FIG. 8 is an assembled sectional view of a front sleeve and a retaining ring according to a second embodiment;
FIG. 9 is a schematic structural diagram of a third front sleeve of the embodiment.
Labeled as: the cable comprises a cable 1, a conductor 2, a backstop tooth 21, a screw cap 3, a fastening sleeve 4, an inner lining pipe 5, a front sleeve 6, a backstop tooth 61, a shell body 7 and a backstop ring 8.
Detailed Description
Example one
The connector comprises a conductive part and an insulating part, wherein the conductive part is wrapped in the insulating part; the conductive part is formed by riveting a conductor 2 and a cable 1, the insulating part comprises a shell main body 7 and a screw cap 3, the shell main body 7 and the screw cap are connected by screw threads, the diameter of the front part of the inner cavity of the shell main body 7 is smaller than that of the rear part, and a step surface is formed; the insulating part also comprises a basket-shaped fastener which consists of a basket-shaped fastening sleeve 4 and an inner lining pipe 5, wherein the fastening sleeve 4 is sleeved outside the inner lining pipe 5, and the fastening sleeve 4 and the inner lining pipe are sleeved outside the cable 1 together for hooping the cable; the whole electric conductor 2 is cylindrical, the head part is a smooth cylinder, and the head part extends into the front part of the inner cavity of the shell main body 7; the tail part of the conductor 2 is provided with a connecting hole for inserting the cable 1, the outer peripheral surface of the middle part of the conductor is provided with a plurality of backstop teeth 21 extending backwards and outwards, the backstop teeth 21 are uniformly distributed on the outer peripheral surface of the middle part of the conductor, and the diameter of a ring formed by the front parts of the backstop teeth is smaller than that formed by the rear parts of the backstop teeth.
The insulating part also comprises a front sleeve 6, the head of which is annular and is sleeved outside the conductor 2; the inner diameter of the front sleeve main body is larger than that of the front sleeve head, and the two inner walls are in transitional connection through an inclined plane; the inner diameter of the head of the front sleeve 6 is larger than the outer diameter of the electric conductor 2 and smaller than the outer diameter of a ring formed by the backstop teeth 21 of the electric conductor, and the outer diameter of the head of the front sleeve 6 is larger than the inner diameter of the front part of the inner cavity of the shell main body 7, so that the head of the front sleeve abuts against the step surface. The circumference of the main body of the front sleeve 6 is provided with a plurality of openings, the openings are provided with check teeth 61 which are bent and extended inwards, the minimum inner diameter of a ring formed by the check teeth 61 is larger than the outer diameter of the conductor and smaller than the maximum outer diameter formed by the check teeth of the conductor, and therefore the check teeth 61 are abutted against the check teeth 21.
During assembly, the conductor 2 and the cable 1 are riveted into a whole, the nut 3, the fastening sleeve 4, the fastener consisting of the lining tube 5 and the front sleeve 6 are sequentially sleeved on the conductor and the cable, the head of the conductor 2 penetrates through the front sleeve 6, when the backstop teeth 21 on the conductor pass through the backstop teeth 61 of the front sleeve 6, the minimum inner diameter of a ring formed by the backstop teeth 61 is smaller than the maximum outer diameter formed by the backstop teeth 21 of the conductor 2, the rear parts of the backstop teeth 21 can slightly expand the backstop teeth 61, and after the backstop teeth 21 completely penetrate through the backstop teeth 61, the backstop teeth 61 abut against the rear parts of the backstop teeth 21, so that the conductor 2 cannot exit from the front sleeve 6; then, tightly hooping the basket-shaped fastener on the cable 1 and abutting against the tail of the front sleeve 6 to prevent the front sleeve from moving backwards; and finally, inserting the front sleeve and the conductor into the shell body 7, and rotating the nut 3 to fixedly connect the front sleeve and the conductor with the shell body 7 through threads, thereby completing the connection of the connector and the cable.
Example two
The connector comprises a conductive part and an insulating part, wherein the conductive part is wrapped in the insulating part; the conductive part is formed by riveting a conductor 2 and a cable 1, the insulating part comprises a shell main body 7 and a screw cap 3, the shell main body 7 and the screw cap are connected by screw threads, the diameter of the front part of the inner cavity of the shell main body 7 is smaller than that of the rear part, and a step surface is formed; the insulating part also comprises a basket-shaped fastener which consists of a basket-shaped fastening sleeve 4 and an inner lining pipe 5, wherein the fastening sleeve 4 is sleeved outside the inner lining pipe 5, and the fastening sleeve 4 and the inner lining pipe are sleeved outside the cable 1 together for hooping the cable; the whole electric conductor 2 is cylindrical, the head part is a smooth cylinder, and the head part extends into the front part of the inner cavity of the shell main body 7; the tail part of the conductor 2 is provided with a connecting hole for inserting the cable 1, the outer peripheral surface of the middle part of the conductor is provided with a plurality of backstop teeth 21 extending backwards and outwards, the backstop teeth 21 are uniformly distributed on the outer peripheral surface of the middle part of the conductor, and the diameter of a ring formed by the front parts of the backstop teeth is smaller than that formed by the rear parts of the backstop teeth.
The insulating part also comprises a front sleeve 6, the head of which is annular and is sleeved outside the conductor 2; the inner diameter of the front sleeve main body is larger than that of the front sleeve head, and the two inner walls are in transitional connection through an inclined plane; the inner diameter of the head of the front sleeve 6 is larger than the outer diameter of the electric conductor 2 and smaller than the outer diameter of a ring formed by the backstop teeth 21 of the electric conductor, and the outer diameter of the head of the front sleeve 6 is larger than the inner diameter of the front part of the inner cavity of the shell main body 7, so that the head of the front sleeve abuts against the step surface of the shell main body 7. The front sleeve 6 is internally provided with a containing cavity matched with the shape of the annular retaining ring 8, the containing cavity and the inner wall of the rear part form an inner step surface, the annular retaining ring 8 is placed in the containing cavity, one end of the retaining ring 8 is pressed against the retaining teeth 21, and the other end of the retaining ring is pressed against the inner step surface in the front sleeve 6.
During assembly, the electric conductor 2 and the cable 1 are riveted into a whole, the nut 3, a fastening piece consisting of the fastening sleeve 4 and the lining pipe 5, the stopping ring 8 and the front sleeve 6 are sequentially sleeved on the electric conductor and the cable, the head of the electric conductor 2 penetrates through the front sleeve 6 and the stopping ring 8, the stopping teeth 21 on the electric conductor can slightly expand the stopping ring 8 when passing through the stopping ring 8, after the stopping teeth 21 completely penetrate through the stopping ring 8, the stopping ring 8 abuts against the rear part of the stopping teeth 21, and the rear part of the stopping ring 8 abuts against the step surface in the front sleeve 6, so that the electric conductor 2 cannot exit from the front sleeve 6; then, tightly hooping the basket-shaped fastener on the cable 1 and abutting against the tail of the front sleeve 6 to prevent the front sleeve from moving backwards; and finally, inserting the front sleeve and the conductor into the shell body 7, and rotating the nut 3 to fixedly connect the front sleeve and the conductor with the shell body 7 through threads, thereby completing the connection of the connector and the cable.
EXAMPLE III
The connector comprises a conductive part and an insulating part, wherein the conductive part is wrapped in the insulating part; the conductive part is formed by riveting a conductor 2 and a cable 1, the insulating part comprises a shell main body 7 and a screw cap 3, the shell main body 7 and the screw cap are connected by screw threads, the diameter of the front part of the inner cavity of the shell main body 7 is smaller than that of the rear part, and a step surface is formed; the insulating part also comprises a basket-shaped fastener which consists of a basket-shaped fastening sleeve 4 and an inner lining pipe 5, wherein the fastening sleeve 4 is sleeved outside the inner lining pipe 5, and the fastening sleeve 4 and the inner lining pipe are sleeved outside the cable 1 together for hooping the cable; the whole electric conductor 2 is cylindrical, the head part is a smooth cylinder, and the head part extends into the front part of the inner cavity of the shell main body 7; the tail part of the conductor 2 is provided with a connecting hole for inserting the cable 1, the outer peripheral surface of the middle part of the conductor is provided with a plurality of backstop teeth 21 extending backwards and outwards, the backstop teeth 21 are uniformly distributed on the outer peripheral surface of the middle part of the conductor, and the diameter of a ring formed by the front parts of the backstop teeth is smaller than that formed by the rear parts of the backstop teeth.
The insulating part also comprises a front sleeve 6 which is sleeved outside the conductor 2; the front sleeve is of a hollow round table-shaped structure, the inner diameter of the tail part of the front sleeve is larger than that of the head part of the front sleeve, and the two inner walls are in transitional connection through inclined planes; the inner diameter of the head of the front sleeve 6 is larger than the outer diameter of the electric conductor 2 and smaller than the outer diameter of a ring formed by the backstop teeth 21 of the electric conductor, and the outer diameter of the head of the front sleeve 6 is larger than the inner diameter of the front part of the inner cavity of the shell main body 7, so that the head of the front sleeve abuts against the step surface of the shell main body 7. The rear part of the front sleeve 6 is also provided with a backstop pipe, the inner diameter of the backstop pipe is smaller than the diameter of a ring formed by the rear parts of the backstop teeth, one end of the backstop pipe is propped against the backstop teeth 21, and the other end of the backstop pipe is propped against a fastener.
During assembly, the conductor 2 and the cable 1 are riveted into a whole, the nut 3, the fastener, the backstop pipe and the front sleeve 6 are sequentially sleeved on the conductor and the cable, the head of the conductor 2 penetrates through the front sleeve 6, a part of backstop teeth 21 on the conductor 2 are positioned outside the front sleeve 6, and the backstop pipe is sleeved on the conductor and is propped against the backstop teeth 21; then tightly hooping the basket-shaped fastener on the cable 1 and abutting against the tail part of the stopping pipe, so that the conductor 2 cannot exit the front sleeve 6 and the front sleeve is prevented from moving backwards; and finally, inserting the front sleeve and the conductor into the shell body 7, and rotating the nut 3 to fixedly connect the front sleeve and the conductor with the shell body 7 through threads, thereby completing the connection of the connector and the cable.
Claims (3)
1. A connector for photovoltaic use includes a conductive portion and an insulating portion, the conductive portion being wrapped in the insulating portion; the conductive part is formed by riveting a conductive body and a cable, the insulating part comprises a shell main body and a screw cap which are connected by threads, the diameter of the front part of the inner cavity of the shell main body is smaller than that of the rear part of the inner cavity of the shell main body, and a step surface is formed; the insulating part also comprises a basket-shaped fastener which is sleeved outside the cable wire and used for tightly hooping the cable wire; the main body of the electric conductor is cylindrical, the peripheral surface of the main body of the electric conductor is provided with a plurality of backstop teeth extending backwards and outwards, wherein a part of the electric conductor in front of the backstop teeth extends into the front part of the inner cavity of the main body of the shell;
the method is characterized in that:
the insulating part also comprises a front sleeve, the head of the front sleeve is annular and is sleeved outside the electric conductor; the inner diameter of the head of the front sleeve is larger than the outer diameter of the conductor and smaller than the outer diameter of a ring formed by the backstop teeth of the conductor, and the outer diameter of the head of the front sleeve is larger than the inner diameter of the front part of the inner cavity of the shell body, so that the head of the front sleeve is abutted against the step surface.
2. A connector for photovoltaic use as claimed in claim 1, wherein: the inner diameter of the front sleeve main body is larger than that of the front sleeve head, and the two inner walls are in transitional connection through inclined planes.
3. A connector for photovoltaic use as claimed in claim 1, wherein: the front sleeve main body is provided with a plurality of inward extending check teeth, and the inner diameter of a ring formed by the check teeth is larger than the outer diameter of the conductor and smaller than the outer diameter formed by the check teeth of the conductor, so that the check teeth are abutted against the check teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915823.5U CN209822964U (en) | 2019-06-18 | 2019-06-18 | Connector for photovoltaic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915823.5U CN209822964U (en) | 2019-06-18 | 2019-06-18 | Connector for photovoltaic |
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| Publication Number | Publication Date |
|---|---|
| CN209822964U true CN209822964U (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920915823.5U Active CN209822964U (en) | 2019-06-18 | 2019-06-18 | Connector for photovoltaic |
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| Country | Link |
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| CN (1) | CN209822964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165483A (en) * | 2019-06-18 | 2019-08-23 | 浙江人和光伏科技有限公司 | A kind of photovoltaic connector |
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2019
- 2019-06-18 CN CN201920915823.5U patent/CN209822964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165483A (en) * | 2019-06-18 | 2019-08-23 | 浙江人和光伏科技有限公司 | A kind of photovoltaic connector |
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